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Hits stream rewind

a rewinding and hit technology, applied in the field of video recorder and playback system, can solve the problems of complex rewind operation and suffer from video quality

Inactive Publication Date: 2009-08-18
BROADCOM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]These and other advantages and novel features of the present invention, as well as illustra

Problems solved by technology

A Rewind operation is complex because B-pictures cannot be decoded from the previously decoded pictures in the rewind order.
If such a decoder is unable to decode multiple pictures in the given time limit for getting ready with a new picture for display, the video quality suffers.

Method used

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Examples

Experimental program
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Embodiment Construction

[0026]FIG. 1 is a system diagram illustrating an embodiment of a personal video recorder system 100 that is built in accordance with certain aspects of the present invention. The personal video recorder system 100 includes a decoder 120 that receives a data transport stream (TS) 115 from some source. The TS 115 may be received by the decoder 120 from a host processor 110, or any other source 105 without departing from the scope and spirit of the invention. The host processor 110 or the any other source 105 is the device that controls the playback (including trick play playback) of the data. The host processor 110 or the any other source 105 and the decoder 120 may be included within a single device or separate devices.

[0027]The decoder 120 is operable to perform decoding of the TS 115, as shown in a functional block 122 within the decoder 120. Similarly, the decoder 120 is operable to perform decoding of the MPEG TS 117, as shown in a functional block 124 within the decoder 120. The...

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PUM

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Abstract

Schemes for rewinding a HITS stream in video recorder and playback systems are presented herein. Reference pictures are stored for a group of pictures, allowing subsequent pictures to be decoded from the reference pictures. The foregoing significantly reduces the number of picture decodes required to display a HITS stream in reverse order.

Description

RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. application Ser. No. 10 / 317,389, filed Dec. 11, 2002 now U.S. Pat. No. 7,149,248 and entitled “COMMAND PACKET SYSTEM AND METHOD SUPPORTING IMPROVED TRICK MODE PERFORMANCE IN VIDEO DECODING SYSTEMS” by Kellerman et. al., which claims priority to Provisional Application, Ser. No. 60 / 426,844, filed Nov. 15, 2002, by Kellerman, et. al., both of which are incorporated by reference herein.FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002][Not Applicable]MICROFICHE / COPYRIGHT REFERENCE[0003]Not ApplicableBACKGROUND OF THE INVENTION [0004]The present invention relates to video recorder and playback systems, and more particularly to controlling the presentation of content.[0005]Television (TV) content distribution is quickly migrating from analog formats to compressed digital formats. Currently, distribution of digital video content for TV display is dominated by use of the MPEG-2 video compression standard (ISO / IEC 1...

Claims

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Application Information

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IPC IPC(8): H04N7/18H04N7/26
CPCH04N19/107H04N19/44H04N19/174
Inventor AGGARWAL, GAURAVKELLERMAN, MARCUSERICKSON, DAVID
Owner BROADCOM CORP